Moses k



M. KQBORTREE. Corset Spring.

No. 231,472. Patented Aug. 24,1880.

142 265 [74 Van Z07- NJEIERS, FNOTQLITHOGRAPHEF WASHINGTON. n c

UNITED STATES PATENT OFFICE.

MOSES K. BORTREE, OF JACKSON, MICHIGAN, ASSIGNOR OF ONE-HALF OF HIS RIGHT TO CHARLES W. HIGBEE,

OF SAME PLACE.

CORSET-SPRING.

SPECIFICATION forming part of Letters Patent No. 231,472, dated August 24, 1880. Application filed February 5, 1880.

To all whom it may concern:

Be it known that I, MOSES K. BORTREE, of the city and county of Jackson, and State of Michigan, have invented an Improvement in Corset-Springs, of which the following is a specification.

My invention relates to improvements in corset-springs, and it consists in certain improvements therein, hereinafter more fully set forth, and pointed out in the claim.

In the drawings, Figure 1 shows an elevation of a pair of my improved springs with the lowerpart extended. Fig. 2 shows a similar view with the lower part retracted. Fig. 3 is a vertical section, showing one method of securing the parts together so that one part will slide upon the other, moved.

In the accompanying drawings, which form a part of this specification, A represents a corset-stee1 of sprin g metal, and provided with any of the ordinar fastenings by means of which it is secured to its adjacent fellow B, which is of a like construction. This spring is constructediinthe usual manner and form, and is provided-with a vertical slot, a.

O is another steel or spring, designed as an and with the spring reextension of the spring A, and is also provided with a vertical slot, 1), rivets a passing through the parts, and the slots hold the parts together and allow the part 0 to be projected or retraeted.

A spiral spring, D, flattened to conform to the shape of the steels or springs, embraces the two parts, one end of said spring being secured to the lower end of the part 0, while the opposite end is secured to the parts A in such manner that when the pressure which retracts the part 0 is relieved the spring will cause said part to project and form an exten sion to the part A.

What I claim as my invention is- A corset-steel made in two pieces, the one being adapted to form an adjustable extension to the other and provided with a spring or springs by means of which the projection of the one part is compelled when the pressure upon the spring or springs has been released, substantially as set forth.

MOSES K. BORTREE.

Witnesses: I

H. S. SPRAGUE, OHAs. J. HUNT. 

